insert_id mysqli

Question

我想從mysql INSERT查詢中返回插入的id。每次運行函數時，我都會得到0。有人可以請解釋我可以檢索的價值點，因爲雖然下面的腳本執行，我不能退出插入的ID。可能做了一些愚蠢的事情。

<?php 
public function execSQL($sql, $params, $close){ 
    $mysqli = new mysqli(DB_HOST,DB_USER,DB_PASSWORD,DB_NAME); 
    $stmt = $mysqli->prepare($sql) or die ("Failed to prepared the statement!"); 
    call_user_func_array(array($stmt, 'bind_param'), $this->refValues($params)); 

    $this->insert_id($this->connection); 
    $stmt->execute(); 
    if($close){ 
     $result = $mysqli->affected_rows; 
    } else { 
     $meta = $stmt->result_metadata(); 
     while ($field = $meta->fetch_field()) { 
     $parameters[] = &$row[$field->name]; 
     } 
     call_user_func_array(array($stmt, 'bind_result'), $this->refValues($parameters)); 
     while ($stmt->fetch()) { 
     $x = array(); 
     foreach($row as $key => $val) { 
      $x[$key] = $val; 
     } 
     $results[] = $x; 
     } 
    $result = $results; 
    } 
    $stmt->close(); 
    $mysqli->close(); 

    return $result; 
} 
?> 

Answer 1

執行插入查詢後檢查$mysqli->insert_id。